In which of these cases does a ripe banana apear black, red light/green light or blue light? Why?

What color is a ripe banana? yellow? The color when it is ripe will absorb the complementary color completely and appear black. What is the complementary color of yellow.

To determine in which case a ripe banana would appear black, red light/green light or blue light, we need to consider the concept of color perception and the properties of different wavelengths of light.

1. Red Light: When a ripe banana is illuminated with red light, it will not appear black. This is because red light has a longer wavelength, and it is typically associated with reddish or warm tones. So, the banana would likely appear in shades of red or brown, depending on the degree of ripeness.

2. Green Light: Similar to red light, green light does not make a ripe banana appear black either. Green light is associated with, unsurprisingly, green hues. So, the banana would likely appear greenish or yellowish, corresponding to its ripeness.

3. Blue Light: Here is where a ripe banana would appear black. Blue light has a shorter wavelength and is associated with cooler tones, including various shades of blue. However, a ripe banana does not reflect or absorb much blue light, causing it to appear darker to our eyes. In low light conditions, this might even give the impression of being black.

To summarize, a ripe banana will appear black when illuminated with blue light since the fruit doesn't strongly reflect or absorb blue light. However, under normal circumstances, such as when illuminated with white light (which consists of various colors), a ripe banana would typically appear yellow or even slightly brown.